SEROUT2/SERIN2 Problem

[thirsty]

Darrel, point taken.

Here is how I've set the configs (18F4525):

DEFINE OSC 8


OSCCON = %01110010
CMCON = %00000111
ADCON0 = %00000000 'Turn off A/D
ADCON1 = %00001111 'Make All ports Digital IO
TRISA = %00000000 'PortA is all outputs
TRISB = %00000000 'PortB is all outputs
TRISC = %00000000 'PortC is all outputs
TRISD = %00000000 'PortD is all outputs
TRISE = %00000110 'PortE.0 is output, 1 and 2 are inputs

As I've said though it seems lots of experienced guys on this forum advise not to use asynch comms when relying on an internal clock that's why I made my last comment.

Any further observations would be appreciated though,

Thirsty

[Darrel Taylor]

As I've said though it seems lots of experienced guys on this forum advise not to use asynch comms when relying on an internal clock that's why I made my last comment.

On a lot of the older chips with internal oscillators that is a valid statement. And I guess you could say that even on the new ones, when you consider the full temperature range, it's still a valid statement.

But, when you're sitting in a room at somewhere close to 25°C, the internal oscillator of the 18F4525 will be within +/- 1%, which should be fine for asynchronous comms. So it doesn't really account for you're problem.

Your register settings look good.

Are you using any @ __CONFIG lines? Or just the defaults for PBP with a 4525?
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[mackrackit]

Try re-writing with out the str , something like
from the manual

SERIN2 1,16780,[WAIT(“A”),B0]

Or better yet just send/receive a simple 5 and blink an LED to test the connection,

I think the problem is in the way you are trying to receive the data. Take another look at SERIN2 in the manual, WAITSTR might be the answer.

[thirsty]

Thanks guys.

Darrel: I hadn't used any other config directives.

The problem is that this setup will be used in an environment other than my office so it has to be reliable. I've decided to go the synch route and have gotten it working reasonably now.

I've definately learned a lesson here though so it wasn't all a waste.

I appreciate your help

Regards

Thirsty

[Darrel Taylor]

WOW!

You've written Synchronous Slave routines in 4 hrs (or less).
I'm impressed, although skeptical.
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[thirsty]

I didn't say I wrote it - I said I had it working. I found some sample code and used that as a basis.

Sarcasm really is the lowest form of wit don't you think?